All of which brings us onto the elephant in the room. The Touryst on Series X also has super-sampling down to 4K from a higher resolution, but it is 6K instead (5760x3240, to be precise). Bearing in mind how close the machines are, why is this the case? Typically, in the PC space, to get a faster GPU, manufacturers produce 'wider' designs that run at the same clocks as less capable parts - or even slower. Xbox Series X follows the same pattern. Its GPU runs at a slower clock, but should be more capable overall as it has many more compute units. Shin'en tells us that in the case of its engine, the increase to clock frequencies and the difference in memory set-up makes the difference. Beyond this, rather than just porting the PS4 version to PS5, Shin'en rewrote the engine to take advantage of PS5's low-level graphics APIs.